# -*- coding: utf-8 -*-
from bs4 import BeautifulSoup
import re
from urllib import parse as urlparse
class HtmlParser(object):

    def _get_new_urls(self,page_url,soup):
        new_urls=set()
        #https://baike.baidu.com/item/%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1
        links=soup.find_all('a',href=re.compile(r"/item/.*"))
        for link in links:
            new_url = link['href']
            new_full_url=urlparse.urljoin(page_url,new_url)
            new_urls.add(new_full_url)
        return new_urls

    def _get_new_data(self, page_url, soup):
        res_data = {}
        res_data['url']=page_url
        title_node=soup.find('dd',class_="lemmaWgt-lemmaTitle-title").find("h1")
        res_data['title']=title_node.get_text()
        res_data['summary']='test'
        return res_data

    def parse(self,page_url,html_cont):
        if page_url is None or html_cont is None:
            return None

        soup=BeautifulSoup(html_cont,'html.parser',from_encoding='utf-8')
        new_urls = self._get_new_urls(page_url,soup)
        new_data = self._get_new_data(page_url, soup)
        return  new_urls,new_data